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@@ -1,9 +1,33 @@
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+#include <setjmp.h>
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+#include <stdexcept>
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+#include <stdio.h>
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+
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#include "OpENerTests.h"
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+#include "CppUTest/TestRegistry.h"
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extern "C" {
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#include "endianconv.h"
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}
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+
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+/*
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+ * Stores the location in the unit test function where execution should jump
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+ * to upon a failed assertion.
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+ */
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+jmp_buf assert_jump;
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+
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+
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+/*
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+ * This pointer is used to indicate if an assertion is expected in the code
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+ * being tested. A non-NULL value means an assertion is expected, and the
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+ * resulting longjmp() target has been stored in the assert_jmp variable.
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+ * The actual address stored here is meaningless, aside from being NULL or not;
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+ * this pointer is never dereferenced. A pointer is used instead of a boolean
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+ * so the SetPointerPlugin can automatically reset it after every test.
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+ */
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+jmp_buf *assert_jump_enabled;
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+
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+
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int main(int argc,
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char **argv) {
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/* These checks are here to make sure assertions outside test runs don't crash */
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@@ -12,5 +36,68 @@ int main(int argc,
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DetermineEndianess();
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+ /*
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+ * Enable the Cpputest SetPointerPlugin to automatically reset the
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+ * assert_jump_enabled pointer after each test.
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+ */
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+ SetPointerPlugin assert_restore("AssertJumpRestore");
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+ TestRegistry::getCurrentRegistry()->installPlugin(&assert_restore);
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+
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return CommandLineTestRunner::RunAllTests(argc, argv);
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}
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+
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+
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+/*
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+ * This is the function called by the OPENER_ASSERT macro if the assertion
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+ * condition fails. It will interrupt the code under test in one of two ways
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+ * depending on if an assertion is expected from the CHECK_ASSERT test macro.
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+ *
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+ * Arguments:
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+ *
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+ * file - Path to the source file where the assertion failed.
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+ * line - Line number identifying the failed assertion.
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+ */
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+extern "C" void test_assert_fail(const char *const file,
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+ const unsigned int line) {
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+ /*
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+ * Throw an exception with the assertion location if an assertion is not
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+ * expected. Unfortunately, this will stop all further tests and does not
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+ * identify the test that failed.
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+ */
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+ if (assert_jump_enabled == NULL) {
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+ const char format[] = "Assertion failure: %s:%d";
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+ char dummy;
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+
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+ /* Determine how long the exception message would be. */
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+ int len_no_null = snprintf(&dummy, 1, format, file, line);
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+
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+ if (len_no_null > 0) {
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+ /*
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+ * Allocate memory for the exception message, including the NULL
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+ * terminator. This memory is not freed because the forthcoming
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+ * exception terminates everything anyway.
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+ */
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+ const size_t len_with_null = len_no_null + 1;
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+ char *msg = (char *)malloc(len_with_null);
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+
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+ if (msg != NULL) {
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+ len_no_null = snprintf(msg, len_with_null, format, file, line);
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+
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+ if (len_no_null > 0) {
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+ throw std::runtime_error(msg);
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+ }
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+ }
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+ }
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+
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+ /* Throw a generic exception if string generation fails. */
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+ throw std::runtime_error("Assertion failure.");
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+ }
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+
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+ /*
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+ * Execute the jump back to the unit test function if an assertion was
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+ * expected.
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+ */
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+ else {
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+ longjmp(assert_jump, 0);
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+ }
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+}
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Jason Valenzuela